Studies on the pudendal nerve. Part 4. A macroscopical observation of the branches of the pudendal plexus in dogs and cats
Kanno, Y.; Takasaki, S.; Kaneshige, T.; Nakanishi, T.
Hokkaido Journal of Medical Science 50(4): 415-430
1975
ISSN/ISBN: 0367-6102 PMID: 1240085 Document Number: 88925
The pudendal plexus and its branches were observed macroscopically in 20 dogs and 20 cats. The pudendal plexus in dogs is formed most frequently by the ventral rami of the 1st, 2nd and 3rd sacral nerves. The bigeminal nerve of dogs and cats is formed by the union of these venrtral rami. The perineal nerve in dogs arises with 1 root from the bigeminal nerve; in cats it arises with 2 roots, the main root arising from the points where the bigeminal nerve joins the sciatic nerve and the accessory one from the bigeminal nerve. In dogs and cats the dorsal nerve of the penis or clitoris arises from the main trunk of the perineal nerve at an average rate of 57.5%. In dogs and cats the inferior rectal nerve consists of 2 divisions. The muscular branch of dogs and cats, which is analogous to that of the perineal nerve in man, arises from the dorsal nerve of the penis or clitoris. In dogs and cats the muscular branch to the obturator internus is derived from the dorsal nerve of penis or clitoris. The pelvic splanchnic nerve of dogs originates from the ventral rami of the 1st 2nd and 3rd sacral nerves and that of cats from the ventral rami of the 1st and 2nd sacral nerves. In the posterior femoral cutaneous nerve in dogs, rats and rabbits, the lateral deviation of the origin from the sciatic to the perineal nerve was observed.